摘要
正交频分复用(OFDM)是4G移动通信的核心技术。本文首先介绍OFDM的基本原理,重点研究在AWGN信道情况下,高斯噪声和载波频率偏移对OFDM解调性能的影响。使用matlab语言实现了OFDM调制与解调过程的仿真,并给出了不同信噪比和频偏情况下的误码性能曲线。仿真结果表明,所建仿真模型能很好地验证理论分析结果。
OFDM is a key technique of the fourth generation mobile communication.The paper introduces the basic principle of OFDM and the influence of Gaussin noise and carrier frequency offset on the OFDM demodulation in Gauss channel.The process of OFDM MODEM is simulated with MATLAB,and the BER curves of SNR or frequency offset are given.The simulation results show that the simulation model can prove the results of theoretical analysis.
出处
《江苏技术师范学院学报》
2012年第2期33-37,共5页
Journal of Jiangsu Teachers University of Technology
